I remember i was bored two years ago on New Years Eve. It was 7pm eastern time, my roommate and i just said, fuck it - lets go to Vegas! Landed in Vegas 30 minutes before midnight. The streets were fucking crowded! Tons of cops, it wasnt fun walking around with luggage trying to find a hotel, especially when the cops were worried what i had in my bags... Amazing fireworks show, moment i wont forget.
Just get a nice hotel room, with a jacuzzi/spa. Watch a couple shows. Eat at a few nice restaurants. Have a fun time gambling. Get wasted! It should be a blast with your wife. I always have fun with the girls i go with.
